When an exception is caught in sys.excepthook, still print it to stderr.

Author: fabioz

.project

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>pytest-qt</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.python.pydev.PyDevBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.python.pydev.pythonNature</nature>
+	</natures>
+</projectDescription>

.pydevproject

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?eclipse-pydev version="1.0"?><pydev_project>
+<pydev_pathproperty name="org.python.pydev.PROJECT_SOURCE_PATH">
+<path>/${PROJECT_DIR_NAME}</path>
+</pydev_pathproperty>
+<pydev_property name="org.python.pydev.PYTHON_PROJECT_VERSION">python 2.7</pydev_property>
+<pydev_property name="org.python.pydev.PYTHON_PROJECT_INTERPRETER">Default</pydev_property>
+</pydev_project>

README.rst

@@ -149,6 +149,11 @@ Many thanks to:
 .. |pycharm| image:: https://www.jetbrains.com/pycharm/docs/logo_pycharm.png
   :target: https://www.jetbrains.com/pycharm
 
+.. |pydev| image:: http://www.pydev.org/images/pydev_banner3.png
+  :target: https://www.pydev.org
+  
 |pycharm|  
 
+|pydev|  
+
 .. _tox: http://tox.readthedocs.org

pytestqt/exceptions.py

@@ -34,6 +34,7 @@ def start(self):
         """
         def hook(type_, value, tback):
             self.exceptions.append((type_, value, tback))
+            sys.stderr.write(format_captured_exceptions([(type_, value, tback)]))
 
         self.old_hook = sys.excepthook
         sys.excepthook = hook

tests/test_exceptions.py

@@ -1,6 +1,6 @@
 import pytest
 import sys
-from pytestqt.exceptions import format_captured_exceptions
+from pytestqt.exceptions import format_captured_exceptions, capture_exceptions
 
 
 @pytest.mark.parametrize('raise_error', [False, True])
@@ -244,3 +244,35 @@ def event(self, ev):
         qapp.processEvents()
 
     assert [str(e) for (t, e, tb) in exceptions] == ['mistakes were made']
+
+
+def test_exceptions_to_stderr(qapp):
+    """
+    Exceptions should still be reported to stderr.
+    """
+    try:
+        from io import StringIO
+    except:
+        from StringIO import StringIO
+    old = sys.stderr
+    new = sys.stderr = StringIO()
+    
+    try:
+        called = []
+        from pytestqt.qt_compat import QWidget, QEvent
+
+        class MyWidget(QWidget):
+
+            def event(self, ev):
+                called.append(1)
+                raise RuntimeError('event processed')
+
+        w = MyWidget()
+        with capture_exceptions() as exceptions:
+            qapp.postEvent(w, QEvent(QEvent.User))
+            qapp.processEvents()
+            assert called
+            del exceptions[:]
+            assert "raise RuntimeError('event processed')" in new.getvalue()
+    finally:
+        sys.stderr = old